Lock cap for containers



April 2, 1929. s, ROBERTS LOCK CAP FOR CONTAINERS Filed Feb, 14, 1928 2Sheets-Sheet l r 0 A m w I Attamej April 1929- 1.. sfRoBERTs 1,707,320

' LOCK CAP FOR CONTAINERS Filed Feb. 14, 192 8 2 Sheets-Sheet 2 Z. 3.Fate/'21s,

Attornqy Patented Apr; 2, 1929.

I fi,'107,320

LAUBENGE S. ROBERTS, OI NEW KENSINGTON, PENNSYLVANIA.

L003 CAP FOB CONTAINERS.

Application and February 14, 1928. Serial in. 254,291..

'llhis invention relates to new and useful improvements. in look capsfor containers such as the fuel tanks, radiators, and the lilreotautomobiles so as to prevent theft of u the cap, and also to preventtheft of the fuel in the fuel tanks.-

The most important object of this invention resides in the provision oila lock cap at this variety that is extremely simple. in

in construction, and that may be readily removed from the tank, radiatoror the like by the authorized person.

In the drawin wherein there is disclosed two embodiments of theinvention:

it Figure l is a detail horizontal section through one fornrot cap asapplied to the filler neclr of an automobile fuel tank which isdisclosed in cross section.

Figure Q is a top plan view thereof. Figure 3 is a lon' 'tudinal sectiontaken substantially upon t e line 3-3 of Figure l and looking at tearrows.

Figure 4 is a view partly in section and partly in elevation ol the typeo'l filler neck associated With the fuel tank or radiator tor receivingmy improved cap and Figure 5 is a view similar to igure 1 ot a slihtlyodihed term of cap.

irst having reference to Figures 1 to 4, A desiates a generally.conventional automobile luel tanh rovided at its bottom witha drain pluga. 7 he top of the tank is provided with a filler opening t around whichis arranged in ccordance with the present invention a cylindrical fillerneck B. This tiller neck is threaded internally as disclosed. Thepresent cap consists of a circular metallic ody 5 from the under side ofwhich de ends a pair of integral and concentric c indrical collars 6 and'Z', the innermost co lar 6 is externally threaded for threadedengagement within the filler neck "B,

while the diameter otthe outermost collar 7 is such as to permit aslidin fit thereof over the outside of the neck as isclosed.

Arranged within the lower end of the in nerinost collar 6 is a closureplate or disc 8 tor a purpose presently to be described.

The body 5 of the cap is equipped with a suitable sliding plunger lockeither of the key controlled or permutation variety, the same includinga sliding plunger or bolt 9 movable at its outer end through anopenformed with a bolt or plunger receiving the turning of the cap oilof said filler neck.

downwardly in the direction ing in the innermost collar 6 directly betoneath the bottom surface oi the cap body 5 as disclosed. I

- The upper edge of the filler neck B is notch 10 through which the-saidplunger or bolt 9 will be forced' when the same is entendedoutwardlyinto cap locking position as disclosed Figure 1 for preventing In theevent a-key-controlled lock structure is associated with the cap saidbody 5 is formed with a'key opening ll normally closed by a swingingplate 12. V

The purpose ofthe plate or disc 8 within the lower end of the innermostcollar 6 of the cap is to prevent passage of air through the cap inwhich event the fuel from the tank will be drained by unauthorizedarties.

As disclosed'in Figure 5, shoul' the filler neck B" of the tank A beformed with external thrpads, the body 5 of the cap is formed w th butone depending collar 7 threaded internally and adapted tor threadedengagement with the neck as disclosed. In this instance also the upperedge of the neck is formed with a notch similar to that disclosed inFigure d: for receiving the end of the loch bolt or plunger 9" when thesame is turned outwardly.

Obviously the same character of construe tions previously described anddisclosed. in the drawings maybe associated with radiators or othercontainers without departing from the spirit and scope oit theinvention.

Even though'l have herein shown and described the two forms or. theinvention as consistin of certain detail structural leatures, itisnevertheless to be understood that some chan es may be made thereinwithout affecting t e spirit and scope out the up pended claims. r

* Having thus described the invention, what y I claim as new is 1. In alock cap torcontainers, including a threaded filler neck, which neck isformed at its upper edge with a notch, saidcapineluding a body member, acircular collar de pending fromv the body member adjacent the peripherythereol'and being threaded tor threaded engagement with the fillerneclt, and a sliding-boltlock associated with the cap, the bolt beinarranged upon the bottom surface at said body and adjacent the Millcollar and ada ted to be projected into the notch of the ller neck whenthe cap has been fully arranged upon said neck.

2.1m a lock cap for containers, including a threaded filler neck, whichneck is formed at its upper-edge with a notch, said cap including a bodymember, a circular collar depending irom the body member adjacent theperiphery thereof and being threaded for threaded enga ement with thefiller neck, and a sliding cap, the bolt being, arranged upon thebotolt'lock associated with the tom surface of said body and adjacentthe collar and adapted to be projected into the notch of the filler neckwhen the cap has been fully arranged upon said neck, said filler neckbeing internally threaded and said collar being externaly threaded, anda second collar formed concentrically around the first mentioned collaradapted for engagement over the outside of the .neck to prevent .accessto said latch bolt.

In testimony whereof I afiix my signature.

LAURENCE S. ROBERTS.

